William p



(No Model.)

W. P. KIRKLAND.

SLATE PBNUIL SHARPBNER No. 285,757. Patented Sept. 25, 1883.

Inflenfr:

n PETERS. memm w. Washinfln. o c.

UNITED STATES PATENT OFFICE.

WILLIAM B. KIRKLAND, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO GEORGE B.DAVIS,

OF SAME PLACE.

SLATE-PENCIL SHARPENER.

SPEQIFICATION forming part of Letters Patent No. 285,757, datedSeptember 25, 1883.

Application filed March 6, 1883. (No model.)

To all whom it may concern: Be it known that I, WILLIAM P. KIRK- LAND, acitizen of the United States, residing in the city and county of SanFrancisco, State of California, have invented certain new and usefulPencil Sharpening Attachments to Slate-Frames; and I do hereby declarethat A the following is a full, clear, and exact desoription of my saidinvention, reference being had to the accompanying drawings.

7 My invention relates to slate-pencil sharpening or pointing devicesfixed in or otherwise combined with the slate-frame, so as to be alwaysat hand ready for use.

The following description fully explains my said invention and themanner in which I proceed to make, use, apply, and carry out the same,the accompanying drawings being referred to by letters and figures.

In the said drawings, Figuresl and 2 show the application and attachmentof my pencilsharpening device in two forms to a slate. Fig. 3 is across-section through the sharpener and surrounding wood of the frame.

In applying my invention to a slate I proceed substantially as follows:A hole, as a, Figs. 1 and 2, being first formed through the slate-frame,either round or square in crosssection, and either of uniform size orwith tapering walls, I press into it and fill it up with a compositioncomposed of fine steel fil; ings, emery, or similar matter, and anadhesive substance, such as glue or liquid cement. The surfaces orportions of this filling presented atboth sides of theframeare thenbrought down smooth and flush. Two thin plates or escutcheons, B B, arethen provided somewhat larger than the hole in the frame, and havingsmall apertures 12 b, that (b) in one plate being large enough to takein the end of aslate-penoil of ordinary thickness, while thecorresponding hole, I), in the other plate is considerably smaller, itbeing simply large enough to permit passage of the pointed end of thepencil. These two plates are fastened to the slate-frame on oppositesides and directly over the filled hole a, and with the centers of theapertures as nearly as possible over the center of the body of filling,and also in direct line with each other. are thus fixed in place, andwhile the filling composition C is still soft, I introduce a smallpointed tool through the larger hole I), and press it down into the bodyof filling until its point protrudes from the smaller hole I). ThisWVhen these two plates tool should have about the same taper that is lout any special construction or character of frame being required, andit is an invaluable attachment for school purposes.

Instead of a single one being-used, I can apply two or more of suchdevices with different kinds or characters of filling, to give severalgrades of grinding substance-a coarse one to do the sharpening orgrinding down and a finer one to finish and point the pencil.

In Fig. 2 I have represented a single cavity with two kinds of fillingand two separate grinding-orifices arranged after this last de scribedmanner; but Fig. 1 shows the invention in its simplest form.

I reserve the right to make separate appli cation for patent for theimproved manner of 80 forming or producing the sharpener in theslate-pencil frame.

Having thus fully described my invention, what I claim and desire tosecure by Letters Patent, is y A slate provided with a sharpener forpenoils in the frame thereof, consisting of a gritty or abradingcomposition with a central aperture, set in a cavityin the frame, andthe holding plate, B secured on either side, as set forth.

"WM. P. KIRKLAND. [L. s.]

WVitnesses:

EnwARnE. OSBORN, F. M. DOWNEY.

